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Integral Real-Time Clock
Table 13-1. System Data Area of the Integral Real-Time Clock
Absolute
System
RAM
Data
Address
Word
8
EA10
EA11
9
EA12
EA13
10
EA14
EA15
EA16
11
EA17
EA18
12
EA19
* Is only checked and processed once per hour
Setting the Clock Parameters
For safety reasons, a check is made when setting the clock parameters to ensure that the block can
be accessed by the operating system and that the clock chip starts up.
Bits 0 and 1 are available in system data word 11 for this purpose. By scanning these bits in the
user program, the hardware status can be read out with system statement "L RS 11".
13-2
Meaning
Operand area of the clock data
Initial clock data address
Operand area D
Operand area F
Initial clock data address
(only relevant for operand
area D)
Operand area of the status
word
Initial address of the status
word
Operand area D
Operand areas F
Initial address of the status
word
(only relevant for operand
area D)
Start-Up check of the clock
block
Correction value
*
S5-115U Manual
Permissible
Parameters
ASCII character:
D for DB area
F for flag area
DB number (DB2 to DB255)
Flag byte address
Data word number
DW 0 to DW 255
ASCII character:
D for DB area
F for flag area
DB number (DB2 to DB255)
Flag byte address
Number of the data word
DW 0 to DW 255
-
400 to 0 to+400
EWA 4NEB 811 6130-02b
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